用于估计稳态视觉诱发电位的实时滤波

Real-time filtering for the estimation of steady-state visual evoked brain potentials.

作者信息

Collura T F

机构信息

Section of Epilepsy and Clinical Neurophysiology, Cleveland Clinic Foundation, OH 44195.

出版信息

IEEE Trans Biomed Eng. 1990 Jun;37(6):650-2. doi: 10.1109/10.55670.

DOI:10.1109/10.55670

PMID:2354847

Abstract

It is shown that EEG visual evoked potentials elicited by repetitive stimuli in the range of 2 to 20 per second can be readily estimated in real time using a simple filtering approach. This measurement takes advantage of the fact that a comb filter will pass the important Fourier harmonics of the signal to provide an estimate of the evoked activity, plus track time-variations in the signal. Results on human subjects demonstrate the effectiveness of the approach.

摘要

结果表明，使用简单的滤波方法可以实时轻松估计每秒2至20次重复刺激所诱发的脑电图视觉诱发电位。该测量方法利用了梳状滤波器能够通过信号的重要傅里叶谐波来提供诱发活动估计值，并跟踪信号随时间变化的这一事实。对人类受试者的测试结果证明了该方法的有效性。